Sustainable phytic acid and cellulose are selected as precursors to fabricate P‐doped carbon material (C‐P‐500), which possesses the high surface area and exhibits excellent catalytic activity and stability in the oxidative coupling of benzylamines (conversion > 95%, yield > 95%). During the carbonization of cellulose in the muffle furnace, phytic acid can efficiently prevent the cellulose‐derived carbon from combustion and create micro/meso porous structure because of its special function of fire retardation. Control experiments and characterizations demonstrate that P‐containing groups anchoring on C‐P‐500 improve the catalytic performance of carbocatalyst in the oxidation of benzylamines to imines. The excellent catalytic activity of C‐P‐500 should be contributed collectively by carbonyl and P=O(OH)₂ groups. Due to the sustainable property of precursors and simple methodology for fabricating P‐doped carbocatalyst, along with the moderate reaction conditions, it is a green catalytic system for the oxidative coupling of benzylamines to imines.

中文翻译：

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植酸在制备无金属碳催化剂中苄胺氧化偶联中的作用†

选择可持续的植酸和纤维素作为制造P掺杂碳材料（C-P-500）的前体，该材料具有高的表面积，并在苄胺的氧化偶联中表现出出色的催化活性和稳定性（转化率> 95％，收率> 95％）。在马弗炉中的纤维素碳化过程中，植酸由于具有特殊的阻燃功能，因此可以有效地防止纤维素衍生的碳燃烧并形成微孔/中孔结构。对照实验和表征表明，锚定在C-P-500上的含P的基团改善了碳催化剂在苄胺氧化为亚胺时的催化性能。C‐P‐500的出色催化活性应归功于羰基和P = O（OH）₂组。由于前体的可持续性和制备P掺杂碳催化剂的简单方法以及适度的反应条件，它是苄胺与亚胺氧化偶联的绿色催化体系。